💚 Move ruff dependency to shared requirements-docs-tests.txt to fix "Build docs" workflow in CI

[YuriiMotov]

Currently scripts/docs.py requires ruff, but requirements-docs.txt doesn't include it, so Build docs workflow fails

python ./scripts/docs.py verify-readme
...
Traceback (most recent call last):
  File "/home/runner/work/typer/typer/./scripts/docs.py", line 9, in <module>
    from ruff.__main__ import find_ruff_bin
ModuleNotFoundError: No module named 'ruff'

[github-actions]

📝 Docs preview

Last commit 5217ce8 at: https://ad15d109.typertiangolo.pages.dev

[tiangolo]

Thank you! 🚀